<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>css3基础</title> 
<style> 
body{
    background-image: url(img_flwr.gif), url(paper.gif);
}
div
{
	width:200px;
	height:30px;
	border:2px solid green;
    padding: 35px;
    background-image:url('background-origin.png');
    background-repeat: no-repeat;
}
#div1{
    background-origin: border-box;
}
#div2{
    background-origin: content-box;
}
</style>
</head>
<body>
<div id="div1">这里是div1里的内容</div>
<div id="div2">这里是div2里的内容</div>
</body>
</html>